What is the adjective phrase in this sentence?:

With a joyous yelp, the dogs from the farm jumped into the pond and swam towards the ducks.

an adjective tells more about a noun

example: boat vs green boat

in this case, green is an adjective that tells more about the boat

an adjective phrase is a phrase that starts with an adjective

looking at the sentance, it seems that the adjective phrase is 'joyous yelp'

'joyous' tells more about the kind of 'yelp' it was